The Dicke model provides a simple fully quantum mechanical description of the interaction between light confined in a cavity and matter. It predicts a phase transition between a state where the cavity is empty and a superradiant phase where the cavity mode is macroscopically occupied. However, experimental realisations of this model are all in non-equilibrium situations where driving and dissipation are important. We have been involved in developing techniques to understand the fate of this phase transition in the presence of various non-equilibrium effects.
Recent publications about the Dicke model are below:
Super-correlated radiance in nonlinear photonic waveguides Zhihai Wang, Tuomas Jaako, Peter Kirton, Peter Rabl Phys. Rev. Lett. 124, 213601 (2020) arXiv
Introduction to the Dicke model: from equilibrium to nonequilibrium, and vice versa Peter Kirton, Mor M. Roses, Jonathan Keeling, Emanuele G. Dalla Torre Adv. Quantum Tech. (2018) arXiv
Superradiant and lasing states in driven-dissipative Dicke models Peter Kirton and Jonathan Keeling New J. Phys. 20, 015009 (2018) arXiv
Suppressing and restoring the Dicke superradiance transition by dephasing and decay